Jennifer Aniston is normally picture-perfect so when she took on the challenge of a bizarre makeover her fans went wild.The Friends star took part in the viral gender face swap challenge over the summer and shared the incredible results on Instagram.Jennifer posted a series of photos of herself as her character Rachel Green from the hit sitcom - but transformed into her male alter-ego Richard Green. She wrote: "Had to," alongside the funny transformations.MORE: Jennifer Aniston wows with chic